نتایج جستجو برای: tidal volume (t.v)

تعداد نتایج: 349592  

Journal: :the journal of tehran university heart center 0
maryam davoudi ekbatant hospital, hamadan university of medical sciences, hamadan, iran. afshin farhanchi ekbatant hospital, hamadan university of medical sciences, hamadan, iran. ahmad moradi ekbatant hospital, hamadan university of medical sciences, hamadan, iran. mohammad hosein bakhshaei ekbatant hospital, hamadan university of medical sciences, hamadan, iran. gholamreza safarpour ekbatant hospital, hamadan university of medical sciences, hamadan, iran.

background: postoperative pulmonary dysfunction is one of the most frequent complications after cardiac surgery and it is believed to result from the use of cardiopulmonary bypass (cpb). in this study, we investigated the effect of low tidal volume ventilation during cpb on postoperative gas exchange and lung mechanics. methods: this prospective randomized study included 100 patients undergoing...

Journal: :anesthesiology and pain medicine 0
ali shahriari department of anesthesiology, roozbeh hospital, tehran university of medical sciences, tehran, iran; department of anesthesiology, roozbeh hospital, tehran university of medical sciences, tehran, iran. tel: +98-9128481663, fax: +98-2122834332 mahdi sheikh maternal, fetal and neonatal research center, tehran university of medical sciences, tehran, iran

Journal: :Sao Paulo medical journal = Revista paulista de medicina 2008
Luciana Carrupt Machado Sogame Sonia Maria Faresin Milena Carlos Vidotto José Roberto Jardim

CONTEXT AND OBJECTIVE Changes in pulmonary function commonly occur after general surgery. The aims were to evaluate vital capacity, tidal volume and respiratory frequency among patients undergoing elective craniotomy and to determine possible correlations of these parameters with surgery duration and etiology for neurosurgery. DESIGN AND SETTING Prospective, open study at a tertiary universit...

Journal: :Journal of cardiology 2015
Tetsuya Taguchi Hitoshi Adachi Hiroshi Hoshizaki Shigeru Oshima Masahiko Kurabayashi

BACKGROUND Exercise training is known to improve the shortness of breath experienced by patients with heart disease when the ventilatory pattern becomes abnormal during exercise. However, the precise relationship between breathing patterns and the effect of exercise training has not been elucidated to date. We evaluated the relationship between the effect of exercise training on exercise tolera...

2015
Jan Karsten Thomas Stueber Nicolas Voigt Eckhard Teschner Hermann Heinze

BACKGROUND Electrical impedance tomography (EIT) is a non-invasive bedside tool which allows an individualized ventilator strategy by monitoring tidal ventilation and lung aeration. EIT can be performed at different cranio-caudal thoracic levels, but data are missing about the optimal belt position. The main goal of this prospective observational study was to evaluate the impact of different el...

Journal: :research in cardiovascular medicine 0
yusuke kasahara department of rehabilitation medicine, st. marianna university school of medicine, yokohama city seibu hospital, yokohama, japan; department of rehabilitation medicine, st. marianna university school of medicine, yokohama city seibu hospital, yokohama, japan. tel: +81-4536611114023, fax: +81-453661190 kazuhiro p. izawa graduate school of health sciences, kobe university, kobe, japan satoshi watanabe department of rehabilitation medicine st. marianna university school of medicine hospital, kawasaki, japan naohiko osada division of cardiology, st. marianna university school of medicine toyoko hospital, kawasaki, japan kazuto omiya division of cardiology, department of internal medicine (no, ko), st. marianna university school of medicine, yokohama city seibu hospital, yokohama, japan

objectives the aim of this study was to investigate the relation between respiratory muscle strength and the severity of chf, and the influence of respiratory muscle strength on abnormal ventilation during exercise in chf patients. conclusions respiratory muscle strength is related to the severity of chf, and associated with rapid and shallow ventilation or excessive ventilation during exercise...

2013
Youn Yi Jo Hong Soon Kim Mi Geum Lee Dong Young Kim Hae Keum Kil

BACKGROUND Different tidal volume (TV) settings during mechanical ventilation alter intrathoracic blood volume, and these changes could alter central venous pressure and the cross sectional area (CSA) of the right internal jugular vein (RIJV). The aim of this study was to determine the optimal TV for maximizing the CSA of the RIJV in the supine and Trendelenburg positions in anesthetized patien...

Journal: :journal of research in medical sciences 0
parvin sajedi mohsen abooei shafa amir mahboobeh karbalaei atefeh babaei

background: the aim of this study was to prevent of increasing end tidal co2(et co 2) with changing of vital capacity and respiratory rate, when using of birthing filter in infants. materials and method: in a randomized clinical trial study, ninety four infant' patients were studied in three groups . basic values, such as: peak inspiratory pressure, tidal volume, minute ventilation, respiratory...

Journal: :Chest 1979
C M Hulse R H Durie E M Murphy

The advantages of determining thoracic gas volume and functional residual capacity (FRC) via the body plethysmograph have long been recognized.1 In our laboratory, we have found that employing a standard X-Y-T recorder in conjunction with the plethysmograph enables us to determine a more precise measurement of FRC from our measurement of thoracic gas volume. During plethysmographic study, the t...

2013
Giuseppe Natalini Cosetta Minelli Antonio Rosano Pierluigi Ferretti Carmine R Militano Carlo De Feo Achille Bernardini

INTRODUCTION The beneficial effect of low tidal volume (TV) ventilation strategy on mortality in patients with acute respiratory distress syndrome (ARDS) has been attributed to the protective effect on ventilator-induced lung injury, and yet its effect on cardiovascular function might also play an important role. The aim of this study was to assess whether low TV ventilation improves cardiac ou...

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